USN Decompression Tables & Procedures.pdf - Watchuseek, World's ...

Flying After Diving-3 Diving
NOTE 1: When using Table 9-5, use the highest repetitive group designator
obtained in the previous 24-hour period
NOTE 2: Table 9-5 may only be used when the maximum altitude achieved is
10,000 feet or less
NOTE 3: The cabin pressure in commercial aircraft is maintained at a
constant value regardless of the actual altitude of the flight. Though cabin
pressure varies somewhat with aircraft type the nominal value is 8,000 feet.
For commercial flights, use a final altitude of 8000 feet to compute the
required surface interval before flying
NOTE 4: No surface interval is required before taking a commercial flight if
the dive site is at 8000 feet or higher. In this case, flying results in an increase
in atmospheric pressure rather than a decrease